An Improved Profile-Based Location Caching with Fixed Local Anchor Based on Group Deregistration for Wireless Networks

Profile-Based Location Caching with Fixed Local Anchor (PCFLA) Strategy helps to reduce the total location management cost by reducing the frequent access at HLR in wireless mobile network. The HLR is informed each time, whenever an MT moves from one LSTP region to another LSTP region. The old FLA and old VLR know about that by registration cancellation message from HLR. Then the old FLA and old VLR delete the MT's profile and old FLA sends a registration cancellation acknowledgement message to HLR. These cancellation messages for each LSTP movement create load on the HLR as well as on the network. In this paper, Group Deregistration (GD) is used in PCFLA to reduce these loads by minimizing the signaling cost and location management cost.